Flange-trimmer.



B. C. TRAVIS & M. BARUCH.

FLANGE TRIMMER.

APPLICATION FILED FEB. 14. 1916.

Patented May 30,1916. i

\ .B czraak TEE sirarns Parana ries; I

BERTRAM c. TRAVIS anniurrron BARUCH, Los ANGELES, CALIFORNIA, ASSiGNORS TO LLEWELLYN IRON WORKS, or LOS ANGELES, CALIFORNIA, A CORPORATION or CALIFORNIA. V

. FLANGE-TRIMMER.

. To all whom it may concern:

'Be it known that we, BERTRAM C. TRAVIS, a subject of the King of the United Kingsdom of Great Britain and Ireland, and MIL- TON BARUCH, a citizen of the United States of America, both residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Flange-Trimmer, of which the following is a specification. 7

Our invention relates to the art of trimming the flanges which are 'commonly used inboiler and 'pipeworks. It is common practice to forge these flanges in the rough, and then secure them on the face plate of a lathe, trimming off the edges of the flanges in a true circle.

The principal object of our invention is to provide a device by which these flanges may be quickly and accurately trimmed in rotary shears.

A further object of the invention is to provide such a device which can be adjusted to suit diflerent internal diameters and different rim diameters of flanges, and further to provide means whereby the device can be set for a certain size of flange and may be used continuously for cutting flanges of that size without individual adjustment.

Further objects and advantages will be made clear hereinafter.

In the drawin s which are for illustrative b 2 purposes only: Figure 1 IS a perspective view of a finished flange. Fig. 2 is a side elevation of a portion of a rotary shear with our invention applied thereto, a portion thereof being shown in section to better illustrate the internal structure. Fig. 3 is a plan view of the work holding portion of the apparatus shown in Fig. 2. v

In the drawings, a shear frame 11 is provided in which shafts 12 and 13 are journaled, said shafts being connected by gears '14 and 15 and being driven by any suitable means not shown. Secured on the forward end of the shaft 12 is an upper cutter 16, and similarly secured on the shaft 13' is a lower cutter 17, cutter 16 overlapping'the cutter 17, the parts 11 to 17 being a standard form of tool found in practically every boiler shop. For the purpose of adapting this tool to the cutting of flanges, we pro:

vide a bracket 21 which is secured to the frame 11 by means of bolts 22 or by any other convenient means. A slide 23 is Specification of Letters Patent. Pafigntgd May 3Q 1916 Application filed. February 14, 1916. Serial No. 78,316.

13, the position of the slide 23 alongthis' line being adjusted by ascrew 24 which is rotatably secured in the slide 23 by a plate 25 and which is threaded at 26 in a bracket 27 which is fastened by means of bolts 28 to the bracket 21. A hand wheel 29 is provided on the end of thescrew 24 to provide for ready adjustment of the slide 23. The slide 23 is provided withtwo holes 30 and 31 in either of which may be fitted a center pin 32, this centerpin comprisingla central cylindrical portion 33, an upper portion 34 and a lower portion35, the portions 34 and. 35 being set eccentric toeach other and to the central portion 33; Rigidly secured onthe central portion 33 is a feed lever 36. A; series of variable centers 41 are provided, these centers slipping over and turning freely on the upper portion 34 of the eccentric pin32 and being provided with a lower flange42 andja'central cylindrical portion 7 43. A number of centers 41 are provided having cylindrical portions 43 of the proper.

size to fit inside. the flanges 44 which it is desired to trim, thesefflanges 44 consisting of a cylindrical'portion 45. and a rim 46. V

The method of operation of the invention is as follows: The eccentric pin 32 being placed either in the hole 31 or in the hole 30,

depending on the size of flange which it is out to suit the diameter to which it is de-v sired to cut the rim 46. The feed lever is 1 normally in the position shown at A in Fig.

3. The cutters 16 and-17 being rotated, the rim 46 is forced between the cutters 16 and 17 and a light out is started thereon. The operator then forces the lever 36 from the position A to the position B, the cutters 16 and 17 cutting continuously during the time that the lever 35 is being moved. The cutters 16 and 17 are thus allowed to cut a comparatively thin shaving from the end of the rim 46, the final diameter being determined by the position of the slide 23.

It will be noted that the screw 24 forms the primary adjusting means for adjusting the position of the slide 23, and the lever 36 forms 7 a secondary adjusting means for quickly and powerfully forcing the ring 46 into engagement with the wheels 16 and 17 We claim as our invention:

1. A flan 'e trimmer com rlsin' a air of circular rotating cutters arranged in shearing relation, a slide mounted to move away from or toward said cutters, a center pin mounted on said slide, a removable center mounted on and turning freely on said center pin and adapted to support the flange to be trimmed, primary adjusting means for forcing said slide toward said cutters, and secondary adjusting means for forcing said center pin toward said cutters without changing the position of said slide.

2. A flange trimmer, comprising a pair of circular rotating cutters arranged in shearing relation, a slide mounted to move away from or toward said cutters, a center pin mounted on said slide, said pin having an upper cylindrical portion and a lower cylindrical portion, said upper cylindrical portion having its axis eccentric with relation to the axis of said lower cylindrical portion and said lower cylindrical portion being journaled to turn freely in said slide, a. re-

movable center mounted to turn freely on the upper cylindrical portion of said center pin and of such a size and shape as to receive and support the flange to be trimmed, screw means for adjusting the position of said slide with relation to said cutters, and means by which said center pin may be turned in said slide to throw the rim of said flange between said cutters.

3. A flange trimmer, comprising a pair of circular rotating cutters arranged in Copies of this patent may shearing relation, a slide mounted to move away from or toward said cutters, a center pin mounted on said slide, said pin having an upper cylindrical portion and a lower cylindrical portion, said upper cylindrical portion having its axis eccentric with relation to the axis of said lower cylindrical portion and said lower cylindrical portion being j ournaled to turn freely in said slide, a removable center mounted to turn freely on the upper cylindrical portion of said center pin and of such a size and shape as to receive and support the flange to be trimmed, screw means for adjusting the position of saidslide'with relation to said cutters, and a feed lever rigidly secured to said center pin on a cylindrical portion of said pin located between said upper cylindrical portion and said lower cylindrical portion by which said center pin may be turned in said slide to throw the rim of said flange between said cutters.

4. A flange trimmer, comprising a pair of circular-rotating cutters arranged in shearing relation, a slide mounted to move away from or toward said cutters, a center pin mounted on said slide, means for securing the flange tobe trimmed on said center pin, primary adjusting means for forcing said slide toward said cutters, andsecondary adjusting means for forcing said center pin toward said cutters without changing the position of said slide.

In'testimony whereof, we have hereunto set our hands at Los Angeles, California, his 7th day of February, 1916.

BERTRAM C. TRAVIS. MILTON BARUGH.

re obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

